Core-making apparatus



A ril 21, 1931. c. K. PRINCE 1,801,978

CORE MAKING APPARATUS Filed Jan. 18, 1927 9 Shee ts-Sheet 1 JhO/CFILZZW6707299206 11: Prime Ap 1931- c. K. PRINCE CORE MAKING APPARATUS FiledJan. 18, 1927 9 Sheets-Sheet 2 jhaerzlir me 16 P1 dime April 21, 1931.c. K. PRINCE 1,801,978

GORE MAKING APPARATUS Filed Jan. 18, 1927 9 Shts-Sheet s 9 Sheets-Sheet4 G. K. PRINCE CORE MAKING APPARATUS Filed Jan. W4

April 21, 1931.

a u z w w 1 w M n L a I n m M l w m WW Ap 1931- c. K. PRINCE I COREMAKING APPARATUS Filed Jan. 18, 1927 9 Sheets-Sheet 5 l'lawavwafiT-PrhweApril 21, 1931- c. K. PRINCE CORE MAKING APPARATUS Filed Jan. 18, 1927 9Sheets-Sheet 6 April 21, 1931. c. K. PRINCE CORE MAKING APPARATUS FiledJan. 18, 1927 9 Sheets-Sheet 7 April 21, '1931. c. K. PRI NCE 1, 0

GORE IAKIHG APPARATUS Filgd'Jan. 18, 1927 9"SheetsSheet 9 In aenlarllarvmfl'. Prhwe Patented Apr. 21, 1931 tausm UNITED STATES PATENTOFFICE CLARENCE K. PRINCE, or WESTFIELD, MASSACHUSETTS; ROBERT K;PRINCE, ADMINISTRATOR or sAIn CLARENCE K. PRINCE, DECEASED, ASSIGNOR ToTHE B. SMITH COMPANY, or WESTFIELD, ,MAssAcHUsnTTs, A CORPORATION orMAssA-' cHUsRTTs coRR-MAKINe APPARATUS Application filed' January 18,1927.' Serial No. 161,782.

This invention pertains to the art of founding and more particularly toapparatus for making cores for foundry molds. In accordance with onemethod of procedure the twohalves of the core are hand-molded inseparate boxes, and the boxes are then dis of the half cores which areto bebrought into contact are first provided with grooves or channels,and when the core halves are registered, these grooves provide thedesired vent passages.

In accordance with thepresent invention I provide automatic means forfilling and compacting the material in the core boxes and for producingthe vent grooves, if such be desired, and forbooking'the core boxes soas to register the complemental half cores and for thereafter moving oneof the core b xes so as to leave its half core resting upon the'halfcore in the other box, thereby forming the completed core; I

In the'accompanying drawings the apparatus is illustrated as designedforforming cores for radiator sections, but the apparatus is'of broaderutility, and the invention is not in any manner confined to the makingof cores of the specific shape herein shown merely for illustrativepurposes.

In the accompanying drawings I Fig. 1 is a front elevation of themachine;

Fig. 2 is an elevation of the right-hand side of the machine as viewedin Fig. 1, but to somewhat smaller scale and omitting parts ofcertainpipe connections;

Fig. 3 is a fragmentary side elevation, with certain parts in sectionand to larger scale, showing details of the filling and com pactingmechanism;

This procedure in which'the Fig. 4: is a front elevation of themechanism shown in Fig. 3, certain parts being in vertical section onthe line H of Fig. 3;

Fig. 5 is a vertical section to greatly'en larged scale on the line 55of Fig. 1

Fig. 6 is a vertical section to large scale substantially on the line 66of Fig. 4;

' Fig. 7 is a fragmentary vertical section substantially on the line'77of Fig. 5, but

to smaller scale, showing the filled core boxes operation; V

Fig. 8 is a fragmentary vertical section, partly in elevation, on thesameplane as Fig. 7 but showing the filled core boxes disposed justprior to the beginning of the booking in booked position;

Fig. 9 is a view similar to, Fig. 8 but showing thebooked core boxes incore delivering position; I I

Fig. 10 is a developed view of the circumferential surface of acompacting and ventforming roll; and

Fig. 11 is an elevation of the inFig.10.

Referring to the drawings and more particularly to Figs. 1 to 4 and Fig.6, the apparatus comprises'a main frame or base 1', conroll shownveniently formed as a hollow casting, andupon which are mounted variousother frame members, some of WlllCll are more specifically describedhereafter.

At opposite sides of the base, I arrange bracket members 2 and 3 (Fig.l), respece V tively, which carry parallel longitudinally extendingrails 4t and 5. These rails support a movable carriage 6 provided withtrucks or wheels 7 and 8 resting upon the rails 4 and 5 respectively.The carriage'6 is thus supported to move longitudinally of the machine,

and in order to impart thedesirecl recipro-- eating motion to thecarriage, I connect one end of. a piston rod 9 (Figs. 3 and 4) to thecentral part of the carriage between the opposite sets of wheels 7 and8. This piston rod is attached to a piston, not shown, which slides in acylinder 10 (Fig. 3), pivotally. supported at 11 upon a bracket 12mounted upon a support 13 carried by a projection 14:

extending outwardly from the main base '1.

Pipes, 14; and 15 are connected to opposite therein provided withsuitable control ports and that a supply pipe 17 delivers pressureiiuid, for example, compressed air, to the valve housing from which theair is distrib uted to the anions actuating cylinders by the operationof the rotor within the casing. To actuate the rotor I may, for example,provide a lever 18 conne ted to the rotor shaft and which extendsupwardly into the path of a pair of tappets l9 and 20 mounted upon a rod21 sliding in a guide in a bracket 22 rising from the support 13 and ina bearing carried by a bracl e: mounted upon any convenient part of themachine frame. One end of tnis rod 21 connected to the carriage 6 sothat as the c re moves the rod will be reciprocated and bring thetappets 19 and 20 alterna i into contact with the lever 18, thusoperating the valve rotor and thereby admitting pressure fluidalternately to the opposite ends of the cylinder 10 and also to certainother fluid pressure cylinders hereinafter described. The arrangementthus described. would result in a continuous reciprocation of thcarriage (3 so long as pressure fluid were supplied. through the pipe17, and to stop and start the machine the supply pipe 17 may befurnished with a control valve 17 I As above stated, the specific meansfor distributing the pressure fluid to bring about the desired sequenceof operations of the various parts of the machine forms 110 essentialfeature of the invention since it is within the skill of the mechanic tosupply such control ling means.

Preferably I provide a dash pot cylinder 10* at each side of thecylinder 10, each dash pot cylinder having a piston connected by apiston rod to a cross-head 10 secured to the piston rod 9. The dash potcylinders are partly filled with oil or other fluid, and have restrictedpassages adapted to retard the flow of fluid from one end to the otherof the cylinder, thus insuring a steady and uniform movement of thecarriage.

Gore boa: charging devices The carriage 6 supports a pair of laterallyspaced receptacles 24 and (Fig. 4), preferably of hopper shape. Theupper edges 26 (Fig. (i) of these receptacles are preferably curved onan are for a purpose hereinafter more fully described, and eachreceptacle is provided with an outlet 27 at its lower end.

Each of the receptacles 2i and is directly mounted upon gate housing 28forming a part of the carriage 6. These gate housings are preferably ofsubstantially circular contour and contain rotary gates 29 forcontrolling the delivery of material from the hoppers 24: and 25. Thesegates 29 are supported upon a shaft 30 (Figs. i and G) which isjournaled in suitable bearings carried by the housings 28. At a pointintermediate the housings 28 the shaft 30 is provir ed with a pinion 31(Figs. 1 and 4) which. meshes with a stationary rack (Fig. This rackcarried by or forms part of a bar 32 which is supported at one end bymeans of a bracket 33 attacked to the member 22- above referred to. Atits opposite end the bar 32 is supported by a bracket 33 attached to anupright member 53% secured to the base member 1. The rack 32 issubstantially horizontal and parallel to the rails i and 5 and as thecarriage 6 moves back and forth along the rails 4c and 5, the engagementof the pinion 31 with the rack causes the sha "t 30 to turn so as torotate the gates 29.

Each of these gates 29 comprises spaced hub portions secured to theshaft 30 and a rim portion comprising a series of spaced outstandingteeth separating pockets 36. The ends of the teeth 35 substantiallycontact with the inner surface of the housing 28, thus determining thedischarge of material from the hopper through the housing. Moreover,these teeth 35 contitute agitating elements which stir up the materialat the lower part of the hopper and prevent it from bridging in thenarrow out let 27. As each gate rotates it carries portions of thefilling material with which the hopper is supplied downwardly throughthe housing 28 and delivers it into a downwardly directed passage orchute 37 provided by an extension 38 of the housing 28. The passage 37terminates at the point 39 slightly below the plane of the rails i and 5and j st above the upper surface of the core boxes hereinafter to bedescribed. Preferably a shield 40 is attached to the lower part of theextension 38 so as to prevent spilling the filling material beyond theend of the core box.

At a suitable point above the right-hand end of the machine, as viewedin Fig. 2, I provide suitable supports 41 and 42 (Figs. 2, 3 and 4).These supports may consist of I beams or other structural elements whichmay be mounted upon uprights carried by the base of the machine or whichmay form portions of or be SUPPOlil-Cd by the building in which theapparatus is arranged. These supports 41 and 42 carry a supply reservoirfor the core box filling material. This supply reservoir as here showncomprises the top member 43, preferably of hopper shape, to facilitatefilling. From this upper part- 43 divergent chutes 44: and 45 (Fig. l)extend downwardly to the upper ends of a pair of spaced verticalreservoirs or compartments 46 and 47, respectively, which are spacedapart thesame distance as thereceptacles or hoppers 24 and 25 abovereferred to, and which are adapted to register with the upper ends ofsaid hoppers when the carriage 6 is at one end ofits stroke. The lowerends of the reservoir receptacles 46 and 47 are of arcuate curvature, asshown at 48 in-Fig. 6, substantially concentric with the upper edges 26ofthe hoppers 24 and 25 respectively but slightly spaced above thelatter.

The walls of the reservoirs 46 and 47 support suitable bearings for atransverse shaft 49 (Figs. 2, 3 and 4). This'shaft is furnished at itsopposite ends and at its central portion, intermediate reservoirs 46 and47, with depending segmental arms 50, 51 and 52 respectively. The armsand '52 support a-curved gate member 53 Which normally closes the lowerend of the reservoir 46, while the arms 51 and 52 support a curved gatemember 54 normally closing the lower end of the reservoir 47; V

I The segmental arm 52 is provided with a bracket 55 (Fig. 3) near itslower end to which one end of a piston rod 56 is pivotally attached.This piston rod is attached to a piston sliding in a cylinder 58pivotally sup ported at 59 upon a suitable bracket 60 mount ed upon themachine frame. or carried by the enclosing structure. This cylinder 58is connected by means of pipes 61 and 62 to the controlling valvehousing 16, and the valve ports are so arranged that whenever thecarriage 6 reaches its extreme limit of movement in the right-handdirection, as viewed in Fig. 2, pressure fluid is admitted to thecylinder 58 to swing the gate. members 53 and 54 from belowtheirrespective reservoirs 46 and 47, thus permitting filling materialto drop into the corresponding hoppers 24 and 25, the piston in thecylinder 58 immediately returning to normal position to close the gatesand shut off further flow of filling material.

Referring particularly to Figs. 3, 4, lOand 11, the carriage 6is'provided with pairs of depending brackets 63 and 64 respectivelywhich support horizontally aligned shafts 65 and 66. These shafts arepreferably screwthreaded at one end and provided with heads at the otherso that they maybe removed at will to permit the rollers which theycarry to beexchangedfor other rollers.

The shafts 65 and 66 support compacting and vent-forming rollers 69 and70 having tubular hubs 67 and 68 respectively adapted to turn freelyupon the respective shafts.

Sprocket wheels 71 and 72 are fixedly secured to the hubs 67 and 68 anda sprocket chain 73 (Figs. 2 and 3) passes around each of the sprocketwheels 71 and 72. Each of the sprocket chains 73 passes up over acorresponding idler sprocket 74 mounted upon brackets 75 carried by themember 22, and

the lower end of each chain 73 is furnished with a weight 76. Theopposite end of each chain 73 is fixedly secured at the point 77 (Fig.3) to the member 22. This arrangement of chains and sprocket wheelscauses the rollers to rotate at a fixed and determined speed as thecarriage 6 moves backwardly and forwardly along its rails; the parts areso relatively disposed that the peripheral surfaces of the rollersaresubstantially tangent to the upper surfaces of the corresponding coreboxes hereafter described.

The rim ofeach of the rollers, for example,

be of such diameter that the ribs 77 need not:

extend completely around the circumference,

but on the other hand should leave, a space 80 of greater or lesserends. 6

In order tosecure the desired result the rollers must not make more thanone com plete rotation during the movement of the carriage 6 in onedirection, and as the machine is adapted to support core boxes ofdifferent lengths, it may become necessary to exchange the rollers forothers of diiien ent diameters in accordance with the length of theboxes employed. For this reason I have arranged the shafts 65 and 66 soas to be readily removable. V

Upon the carriage 6 I also mount a pair of transverse shafts 81, eachcarrying a scraper arm 82which supports a scraper member 83 at its lowerend. Each arm 82 is also furnished with a stop member 84 adapted toengage a fixed part of the carriage so as to limit the movement of thescraper arm in one direction. If desired, I may pro vide means forlifting the scraper arms as extent between their the carriage makes itsreverse stroke, but I have not shown such means herein.

Gore booking dem'ces 1 1 supporting brackets 85 and 86 having bearingsfor a shaft 87 extending longitudinally of the machine. At a centralpoint this shaft carries the hub '88 (Fig. 5) of the hub 88 being keyedor otherwise secured to the shaft. The gear 89' meshes with a pinion 90mounted upon a shaft'91 supported in bearing'brackets 92 carried by anelongate housing 93 which ii turn is supported upon atransverse web 93"forming a part oft-he base member 1. I l

a gear 89,

The housing 93 extends transversely across the machine, and within thishousing I ar range a series of shafts or rollers 95 (Fi .1. 5 and 7)supported at their opposite ends in antifriction bearings 90, nefemblymounted in brackets 94 or other suitable supporting means carried by thehon-Ding 93, and the shafts 95 form a horizonta disposed series, beingspaced apart and supper-til a reciprocating drive member or The bar 97car 91 carries a rack 98 which meshes ith the pinion 90. A piston rod 99is secured to one end of the bar 97, and tins rod'is attached to apiston, not shown, sliding in a cylinder 100 (Figs. 2 and 7) supportedupon the base 1. The cylinder 100 is connected by means of pipes 101 and102 respectively to the valve housing 16, and by the act; non of thevalve in the housing 10 fluid is admitted alternatcly to opposite endsof the cylinder 100, thus reciprocating the rack 98, turning the inion90, and causing the gear 80 to oscill ate.

The shaft 87 carries a pair of hub members 103 disposed respectivelyadjacent to the bearings 85 and 86, and these hubs are keyed to theshaft and support a pair of arms 102 to which a core box support 10 1(Figs. 1, 7, 8 and 0) is attached. For convenience in furthe!description this core box carrier or sup port 104 will be termed thedun'iping core box support or carrier and carries a core box 105 which,while removable for interchange with core boxes of other shapes.normally secured to the support 10l, and in effect constitutes a part ofthe support.

The core box 105 as here shown has a plurality of spaced compartments10S adapted to be filled with the core material 107 in which the ventgrooves 108 are formed, as will hereinafter be described. During thefilling operation the support 104 rests upon an anvil member 109conveniently mounted upon a housing 93 (Fi T) which covers the gear 89and associated parts. The gear 89 is also furnished with a housing 942(Fig. Which extends downwardly and covers the pinion 90 and the partsimmediately below the latter.

The shaft 87 also carries a pair of sleeves 110 disposed at oppositesides of the hub 88. The sleeves 110 are free to turn upon the shaft 87,and each sleei e carries a hub 111 which is fixedly secured to thesleeve. The

, hubs 111 carry arms 112 to which is attached the core box support oncarrier 113. For convenience in description this core box support 113 ishereafter referred to as the receiving core box support. This supportcarries the core box 114 (Fig. 7) having compartments 106- complementalto the compartments 106 of the core box 105. These compartments 106 areadapted to receive the filling material 107 in which the vent grooves108* are formed. \Vhen in the filling position the support 113 restsupon the anvil 115 suitably supported by the machine frame.

The support 10 1 carries a latch member 110 pivotally mounted at 11? andprovided with a spring 118 whicn tends to retain it in latchingposition. Tli' latch comprises a hook member 119 which adapted incertain positions of the core box to engage an abutment member 120carried by the core box sup port 113, thereby to lock the core be): supports together with their core boxes in registry. The hook member 119 ofthe latch is provided with a cam surface 121 which is adapt-ed atcertain times to engage a releasing abutment 122 (Fig. 9) carried by afixed part of the frame whereby to disengage the latch hooli from thepart 120.

The sleeves 110 also carry hubs 122 from which arms 123 (Fig. 5) extend,the arms 123 being fixed to or integral with the hubs 122. The hubs 122are fixed to the sleeves 110 so as to turn therewith.

The free ends of the arms 123 are pivotally connected to. bell cranklevers 24: (Figs. 5, 7. S and 9) having short arms which are piv' etallysecured to 1 on rods 125. The iston rods 125 rue attached to pistons,not siown, siidir in cylinders 126. These cylinders constitutecushioning means for retarding the movement of the core box support 113,at least in a counterclocnwise direction, and for this purpose thecylinders 126 may be in the nature of dash pots adapted either for thecirculation of oil tl rough suitable restricted orifices or for thepassage of air through such restricted orifices. Since these dash potpistons may be of any usual form, they are not herein shown in detailnor claimed except in combination.

The bell crank levers 124 have long arms which support the opposite endsof a trans verse rod or bar 129. This rod or bar normally engages thevertical surfaces of an abutment member 130 (Fig. 7) carried by abracket 132 secured to the drive member or rack-carrying bar 97. Thus asthe bar moves to the left (Fig. 7) the abutment 130 pushes the bar 129ahead of it, thus swinging the lever arms 123 in a clockwise directionas viewed in Fig. 8. During this movement the bar 129 travels along theupper horizontal surface of a guiee member 1233 supported by the frame.

Adjacent to the left-hand end of the guide member 133 I provide camhaving an inclined or wedge-like surface 13-h Preferably this camadjustable by means of a set screw 185 or equivalent means. The heightof this cam is such that as the bar 129 rides up the inclined surface ofthe cam the bar is eventually raised to such a height that itescapesfrom behind the abutment 130 so that continued movement of the abutment130 to the left, as viewed in Figs. 7 and 8, fails to impart any furthermotion to the lever arms 1.23.

Operation into the hoppers 21 and25. The gates and 5e immed'atelv returnto normal position and 6 moves toward the left, as 2, \vhilethe rotarygates 29 a d deliver filling material from the )cis 2-1 and'25 downthrough the chutes etc the respective core boxes 105 and 114-. Thecarriage continues to travel to the left the tops of the c" e boxes, andas it the filling mater. is deposited in the core box s and is compactedby the action of the rollers 69 and Q 0. Surplus material is scraped offfrom the top of the core boxes by the action of the scrapers 83. Whenthe carriage has finished its travel to the left, the valve 16 isautomatically actuated to reverse the movement of the piston in thecylinder 10 and the carriage begins its travel toward the During thistime, if desired, and by right.

any means or by the hand of the workman,

the scrapers 83 may be raised from the core boxes although this is notnecessary. During this return movement the rollers 69 and 2 0 impressthe: ribs 77, 78 and 79, in the smoothed and compacted upper surface ofthe material in the core boxes, soas to form grooves in the materialfilling the core boxes.

As above describ ed,'the diameter of the rolls 69 and 70 is so chosenthat as the carriage makes its return movement these rolls make only apartial turn so. that the pattern of the ribs upon the rolls isimpressed but once in the surface of the material in thecore box. Iflonger or shorter core boxes are used, the rolls are correspondinglychanged in size. Moreover, as above described, since the rolls areconstrained to move at a predetermined rate by means of the chains 73,,

there can be no slippage between the surface.

of the rolls and the material in the core boxes so that the ribs areaccurately impressed in the material and the material is not pushedendwise ofthe core boxes so as to disturb its uniform texture.

After the carriage has returned to its original position, pressure fluidis'admitted to thecylinder 100, causing the rack bar 98 to move to theleft as viewed in Figs. 7, 8 and 9, thus through the gears and 89swinging the arms 103 in counterclockwise direction. At the same timethe abutment 130, acting on the rod 129, swings the arms 112 in a o theworkman, and tempoclockwise direction. The relative speeds of movementof the arms 103 and 112 are so regulated by properly choosing the gears'90 and 89 that the core boxes 105 and 114 meet in registering relationin a plane somewhat inclined (for example about 7 0) to the vertical andpreferably inclining toward the normal position of the core box 114. Atsubstantially the instant that the core boxes register, thelatch 116snaps down over the abutment 120 and locks the separate box corestogether sothat they become in sheet a single unit. Atthe same timethat'the latch locks the core boxes together, the cam 134 raises the rod129 out of engagement with the abutment 130, thus'releasing the core boxsupport 113 from the driving mechanism. The support 113 is thus free toreverse its movement, andas the support 10 1 continues to swing in acounterclockwise direction the united core boxes are swung down as aunit in registering contact to the position shown in Fig. 9. During thelatter movement, the piston in cylinder acts in opposition to the dashpot cylinders 126 so that the movement of the united boxes is slow andsteady and in effect cushioned by the dash pot action. As the support113 engages the anvil 115 the latch 116 is released from the abut ment120 by the member 122 At about this resting upon the half core in thecore box 114:. The workman now removes this core box 114 with thecompleted core from the support 113 and places it in the oven or otherdevice employed for hardening or baking the cores, and places anotherempty core box upon the support 113, and, as during the bookingoperation just described, the

hoppers Qand 25 have received another charge, the machine is ready ofthe above-described cycle.

The machine thus automatically forms booked cores and continues theformation of such cores as long as pressure fluid is supplied and freshcore boxes are mounted at the proper intervals upon the support 113.

While one specific embodiment of the invention has herein beenillustrated by way of example, it is to be understood that various for arepetition changes in shapes, proportions, and relative arrangement ofparts may be made without departing from the spirit of the invention;

1 claim: V

1. Apparatus of the class described comprisingmeans for supportingcomplemental core boxes, mechanically operable means for simultaneouslyfilling said boxes, and means for booking saidboxes,

2. Apparatus of the class described comprising means for supporting acore box in a substantially horizontal position, a carriage movableacross the top of the box, mcans'for moving the carriage, a fillingmaterial receptacle mounted on the carriage, the receptacle having adelivery orifice, a rotary gate controlling said orifice, a gearconnected to said gate, and a stationary rack with which the gear mesheswhereby movement of the carriage across the core box turns the gate.

3. Apparatus of the class described comprising means for supporting acore box in a substantially horizontal position, a carriage movableacross the top of the box, means for moving the carriage, a receptaclefor filling material mounted on the carriage, the receptacle having adelivery orifice, a rotary gate controlling said orifice, said gatehaving peripheral pockets separated by radial teeth, a gear connected tothe gate, and a stationary rack with which the gear meshes wherebymovement of the carriage across the core box turns the gate.

4. Apparatus of the class described com; prising means for supporting acore box in substantially horizontal position, a station.- ary reservoirfor holding filling material, a carriage normally disposed below saidreservoir, means for moving the carriage across the top of the core box,a hopper mounted on the carriage, and. a movable gate controlling thedelivery of filling material from the reservoir to the hopper. V

5. Apparatus of the class described comprising means for supporting acore box in substantially horizontal position, a carriage movable acrossthe top of the core box, said carriage having a receptacle :for holdingfilling material, means for moving the carriage, a stationary reservoirfor filling material disposed at one end of the path of the core box andabove the latter, agate controlling the delivery of material from thereservoir, and means for actuating the gate for delivering material fromthe reservoir to the receptacle on the carriage when the receptacle isbelow'the reservoir. 7

'6. Apparatus of the class described comprising means for supporting a'core box in substantially horizontal position, a stationary reservoirfor filling material, a carriage normally disposed below said reservoir,means for moving the carriage across the top of the receptacle, a hoppermounted on the carriage, a swinging gate controlling the delivery ofmaterial from the reservoir to the hopper, and power actuated means formoving the gate.

'7. Apparatus of the class described comprising means for supporting acore box in substantially horizontal position, a stationary reservoirfor holding filling material, a carriage normally disposed below saidreservoir, means for moving the carriage across the top of thereceptacle, a hopper mounted on the carriage; a gate controlling thedelivery of filling material from the reservoir to the hopper, and afluid actuated piston for moving the gate.

8. Apparatus of the class described com-- prising means for supporting acore box in substantially horizontal position, a stationaryreservoir forholding filling material, a carriage normally disposed below saidreservoir, means for moving the carriage across the top of thereceptacle, a'hoppermountegl on the carriage, means for determining thedelivery of material from the reservoir to the hopper, and means forregulating the delivery of material from the hopper to the core box.

9. Apparatus of the class described comprising means for supporting acore box in substantially horizontal position, a carriage movable acrossthe top of the core box, means for reciprocating the carriage a fixeddistance in opposite directions, a roller supported by the carriage. asprocket wheel secured to the roller, a chain engaging the sprocketwheel. one end of the chain being fixed, and a weight attached to theother end otthe chain.

10. Apparatus of the class described having means for forming a vent inthe upper surface of the material filling a core box, said meanscomprising a roller having a circumferential rib projecting from itsperipheral surface, the rib being less than the circumference of theroll in length, and means for turning the roll through an are notsubstantially greater than three hundred and sixty degrees. 7 V

11. Apparatus of the class describedcomprising means for supporting acore box in substantially horizontal position, a carriage movable acrossthe top of the core box, means forreciprocating the carriage a fixeddistance in opposite directions, a roller supported by the carriage, theroller being interchangeable with other rollers, and vent-forming ribsprojecting from the peripheral surface of the roller.

12. Apparatus of the class described having means for forming a vent inthe upper surface of material filling 'a core box. said means comprisinga roller having a plurality of parallel. circumfercntially extendingribs projecting from its peripheral surface, the ribs being less inlength than the circumference of the roll, a transverse rib uniting saidparallel ribs, and means for oscillating the roll through'an are notgreater than three hundred and sixty degrees.

13. Apparatus of the class described having means for forming a vent inthe upper surface of material filling a core box, said means comprisinga roller having a plurality of spaced parallel circun'iferentiallyextending ribs projecting from its peripheral surface, the ribs beingless in length than the circumference of the roll, transverse ribsnsoneys 15. Apparatus of the class described com prising means forsupporting a core box in substantially horizontal position, means forfilling the box, a compacting roller having a vent-forming rib on itsperipheral surface, a scraper, and means for moving the roller andscraper in one direction along the top of. the

box tocom act the material and level it, and

for therea 'ter moving the roller in the opposite direction to impress aventd orming channel in the leveled material; 7

16. Apparatus of the class described comprising means for. supportingcomplemental core boxes in substantially horizontal position, andmechanically operable means for simultaneously filling said boxes.

17. Apparatusfof the class described comprising. means for supporting apair of complemental core boxes, mechanically operable means forsimultaneously filling said boxes, and means for thereaftersimultaneously compacting the material filling said boxes.

18. Apparatus of the class described comprising meansfor supporting apair of complemental, core boxes in substantially the same horizontalplane, a carriagemovable across the tops of; the boxes, and meansmounted on the carriage forsimultaneously delivering filling material toboth boxes as the carriage passes across them, means for simultaneouslycompacting the material in the filled boxes and vifor makingvent groovesin the upper surface of, the material filling both boxes, and means formoving the sup porting means to bring the boxes into booked relation.

19. Apparatus of the class described comrising a reciprocating carriage,a shaft'parallel to the direction of movement of the carriage, a pair ofcore box supports mounted to swing about the axis of the shaft, a corebox mounted on each of said supports, the core boxes normally occupyinga horizontal plane below the path of the carriage,

means mounted onthe carriage for holding a.

supply of filling material, means for advancing the carriage across theboxes while delivering filling material to both boxes, and means forswinging the core box supports to bring the filled boxes into bookedrelation when the carriagehas returned to normal position. x V

20. A machine of the class described comprising a pair of core boxesnormally spaced apart and means for simultaneously swing ing said boxesin arcuate paths and at relatively different speeds until they registerwith one another.

21. A machine of the class described comprising a pair of core boxesnormally spaced apart and disposed substantially horizontally and meansfor simultaneously swinging said boxes about a common axis in oppositedirectionsand at dillerent speeds until they meet in a plane inclinedfrom the vertical toward the normal position of the more slowly movingbox.

22. A machine of the class described comprising a pair of core boxes,means forswinging one of said boxes through an angle less than ninetydegrees and for swinging the second box until it engages and registerswith the first and thereafter swinging-said first box back tonormalposition while main: taining the second box in engagement with thefirst box.

23. A machine of the-class describedcomprising a dumping carrier, areceiving car rier, a core box attached to each carrier, a substantiallyhorizontal shaft constituting a pivotal support for said carriers, thecarriersbeing normally disposed horizontally and at opposite sides ofsaid shaft, means for simultaneously swinging said carriers upwardlyuntil their coreboxes are brought into registering engagement, the speedof movement of the dumping carrier being greater than that of thereceiving carrier, the movement of the carrier being such, after thecore boxes engage, as to swing them as a unit to the normal position ofthe receiving carrier, the dumping carrier thereafter reversing itsmovement.

24. A machine of theclassdescribed comprising a pair of core boxesnormally spaced apart, actuating means for swinging the boxes inopposite directions about a common axis until they meet and register andfor thereafter swinging them. as a unit toward "a horizontal position,and means for resiliently opposing the latter movement.

25. A machine of the class described comprising an oscillatoryhorizontal shaft, a core box carrier secured to the shaft-to turntherewith, a second corebox carrier journaled to turn freely on saidshaft, said second carrier having an actuating arm, power means forsimultaneously turning theshaft and actuating arm in oppositedirections, and cushioning means connected to said actuating arm wherebyresiliently to oppose movement of the latter inone direction at least.

26. A machine of the class described comprising a pair of core box.carriers, a substantially horizcintal shaft constit otal support forsaid carriers, the ca" 'iers being normally disposed at opposite sidesof said shaft, a core box attached to one carrier, a complemental corebox mounted upon the second carrier, means for swinging the carriers inopposite directions about said shaft until the core boxes are broughtinto registering engagement, and for thereafter moving them as a unittoward the normal position of the second carrier, and cushioning meansfor preventing shock as the second can rier returns to normal position.

27. A machine of the class described comprising a pair of core boxcarriers, a substantially horizontal shaft constituting a pivotalsupport for said carriers, the carriers being normally horizontallydisposed. but at opposite sides of said shaft, a core box attached toone carrier, a complemental core box mounted upon the second carrier,means for simultaneously swinging the carriers upwardly about said shaftuntil the core boxes are brought into registering engagement and forthereafter moving them as a unit toward the normal horizontal positionof one carrier, and a dash pot cylinder having a piston so related toone at least of said carriers as to oppose movement of said carrier.

28. A machine of the class described comprising a pair of core boxesnormally spaced apart, actuating means for swinging the boxes inopposite directions about a common axis until they meet and register andfor there after swinging them as a unit to a horizontal position, andmeans for locking the boxes together when they meet and forautomatically releasing the locking means when the engaging boxes havereached horizontal position.

29. A machine of the class described comprising a pair of core boxesnormally spaced apart, actuating means for swinging the boxes inopposite directions about a common axis until they meet and register andfor thereafter swinging said boxes as a unit to a substantiallyhorizontal position, a latch for holding said boxes in contact whilethey are swinging as a unit, and means engageable by said latch as theboxes reach horizontal position for releasing the latch.

30. A machine of the class described comprising a pair of core boxcarriers, a substantially horizontal shaft constituting a pivotalsupport for said carriers, the carriers being normally horizontallydisposed but at opposite sides of said shaft, a core box at--- tached toone carrier, a complemental core box mounted upon the second carrier,means for swinging said carriers upwardly from normal position untiltheir core boxes meet and register and for thereafter swinging them bothtoward the normal position of the first carrier, a latch carried by onecarrier engageable' wlth the other carrier when they meet to lock themtogether, and an abutment element adjacent to the normal position of thesecond carrier for releasing said latch as the second carrier approachesits normal position.

A machine of the class described comprising an oscillatory hor zontalshaft a core box carrier secured to the shaft to turn therewith, asecond core box carrier jom'naled to turn freely on said shaft, saidsecond carrier having an actuating arm, and means for turning said shaftand for simultaneously swinging the'second carrier in the oppositedirection.

32. A machine of the class described. comprising an oscillatoryhorizontal shaft, a core box carrier secured to the shaft to turntherewith, a second core box carrier journ aled to turn freely on saidshaft, said second carrier having an actuating arm, a drive member,means transmitting motion from said drive member to turn said shaft,means transmitting motion from said drive member to the actuating arm ofthe second carrier, and means for rendering inoperative said lastnamedmotion-transmitting means.

33. A machine of the class described comprising an oscillatoryhorizontal shaft, a core box carrier secured to the shaft to turntherewith, a second core box carrier journaled to turn freely on saidshaft, said second carrier having an actuating arm, a drive member,gearing for transmitting motion from the drive member to the shaft toturn the latter, means including normally cooperative but disengageableparts for transmitting movement from the drive member to said actuatingarm, and means for automatically disengaging said parts at a.predetermined point in the operation of the drive men'iber.

3-1. A machine of the class described com prising an oscillatoryhorizontal shaft, a core box carrier secured to the shaft to turntherewith, a second core box carrier journalcd to turn freely on saidshaft, said second carrier having an actuating arm, power means forturning the shaft to swing the first carrier from normal horizontalposition, disengagea-ble connections for transmitting movement from thepower means to the actuating arm to swing the second carrier upwardlyfrom normal position, means for disengaging said connections before thesecond carrier has attained a vertical position, and means for retardingthe second carrier as it moves back to normal position.

35. A machine of the class described comprising an oscillatoryhorizontal shaft, a core box carrier secured to the shaft to turntherewith, a second core box carrier journalcd to turn. freely on saidshaft, said second carrier having an actuating arm, power means forturning the shaft to lift the first core box carrier, disengageableconnections IOU for transmitting movementfrom the power means to theactuating arm whereb'y'to'lift the second core box carrier, means fordisengaging said' connections when the second prising an oscillatoryhorizontal shaft, a core box carri ccured to the shaft to turn therwith, a second core box carrier yournaled to turn freely on said shaft,said second carrier having an actuating arm, power means 1 means fordisengaging the pm from the abut for turning the shaft to swing thefirst car rier from normal horizontal position, disengageableconnections for transmitting movementfrom the power means to the actuating arm to swing the second carrier up- *ardly from normal position,means for disngaging said connections at a predetermined point in themovement of the second carrier, and a dash pot cylinder having a pis tonconnected to saidactuating arm to oppose the reverse movement of thesecono carrier.

3'4. A machine of the classdescribed comprising an oscillatoryhorizontal shaft, a core box carriersecured to the shaft to turn threwith, a second core box carrier journaled to turn freely on saidshaft, said second'carqicr having an actuating arm, power means forturning the shaft to swing the first carrier from normal horizontalposition, disengageable connections for transmitting mov ment from thepower means to the actuat- .ng arm to swing the second carrier upwardlyfrom normal position, the relative rates of swing of the carriers beingsuch that the first carrier meets the second before thelatter hasattained a vertical position, means for disengaging said connect-ionswhen the carriers meet, and means for retarding the second carrier as itis pushedback to normal position by the continued advance of the firstcarrier. a. r

38. A machine of the class described comprising an oscillatoryhorizontal shaft, a core box carrier secured to the shaft to turn therewith, a second core box carrier journaled to turn freely on said shaft,said second carrier having an actuating arm, a fluid actuated piston, arack bar connected to the piston, gearing transmitting movement from therack bar to the shaft to swing the first; carrier upwardly from normalposition, disengageable connections for transmitting movement from therack bar to the actuating arm to swing the second carrier upwardly fromnormal position, the relative rates of movement of the carriers beinsuchthat they meet before the second carrier has reached a verticalposition, means for locking the carriers together when they meet and fordisengaging said motiontransmitting connections, and means forresiliently opposing return of the second carrier to normal position.

39. A machine of the class described comprising an oscillatoryhorizontal shaft, a core box carrier secured to the shaft to turn'therewith, a second core box carrier journaled'to turn freely on said'shaft,said second carrier having an actuating arm, a reciprocating-drivemember provided with rack teeth, gearing actuated by said raokteeth forturning said shaft, an abutment carried by the reciprocating drivemember, alatch link pivotallyconnected at one end to the actuating arm,the opposite end ofthe link havinga pin normally eng-aging the abutment,and

ment when thedrive member reaches a predetormined'point in its'travel.

I 40. A ma'chineof the class described comprising an oscillatoryhorizontal shaft, a core box carrier secured to the shafttoturn therewith, a second core box carrier journaled to turn freely onsaidshafhsaid second carrier having an actuating arm, a reciprocatingrack, gearing for transmitting motionfrom the rack to theshaftga-n'abutment moving with the rack, a latch normally engagingtheabutment and transmitting =movement from the latter to the actuatingarm, and an ad justable, normally fixed camfor releasingthe latchfrom'theabutment when the rack reaches a predetermined point in itstravel in one direction.

' 41. A machine of the class described com prising an oscillatoryhorizontal shaft, a core box carrier secured to the shaft to turntherewith, a second core box carrier journaled to turn freely on saidshaft,-said second carrier having an actuating arm, a drive -member,gearing for transmitting movement fromthe drive member to the shaft, alink connected to said actuating arm,-an'abutment moving with the drivemember and normally engaging said link whereby to operate the actuatingarm, and a cam for disengaging the link from said abutment at'apredetermined point in the operation of the drive member.

42. A machine of the classdescribed comprising a dumping carrier, areceiving carrier, a core box attached to each carrier, a substantiallyhorizontal shaft constituting a pivotal'support for said carriers, thecarall riers being normally" disposed horizontally and at opposite sidesof said shaft, means for swinging the carriers upwardly in oppositedirections nntiltheir core boxes arebrought into registering engagement,the speeditof ceiving carrier from its actuating means afterfthe coreboxes meet,'the receiving carrier'then returning 'to normal position'andthe dumping carrier following it, keeping the core boxes in contact, andmeans for there- 1 after restoring the dumping carrier to normalposition. 7 f o 43. In a core booking machine, a stationary support,complementary core box parts mountedron said support for movementbetween filling and booking positions, and means unconnected with saidparts but engageable therewith for moving said parts together at abooking position and for thereafter moving said parts together to one ofsaid filling positions. V

44. In a core booking machine, a support, complementary core box partsconnected to said support for movement between a sep- 5 arated ositionand a booked position; and

means or moving said parts from said separated position to said bookingposition, said booking position being inclined from the ver ticalposition. 1

J 45. In a core booking machine, a support, complementary: core boxparts connected to said support for movement between a separatedposition and a booking position, and fluid operated means for movingsaid parts from said separated position to said booking position saidbooking position being inclined from the vertical.

46. In alcore box booking machine, a support complementary halves of acore box mounted on said support and relatively pivotally connectedtogether for swinging movements toward and from a booking position, fromand toward a substantially horizontal filling position, and means forswinging one of said halves about its pivot past vertical dead center ofthe half with respect to the pivot. 77

47. In a core box booking machine, coniolementary halves of a coreboxrelatively iinged together at one side of each, means for supportingsaid halves in substantially 7 horizontal open position, and means tormoving one of said halves about said hinge and away from saidsupport tobook the hal together, said means moving said halt pa:

itswertical dead center with respect to said hinge. i r I 48. In a corebooking niachiniga support, complementary halves of a core box mountedon said support and relatively pivotally connected together for swingingmovements toward and from a booking position from and toward 'asubstantially horizontal filling positiom'and fluid operated means forswinging one'of said halves about its pivot past vertical dead center ofthe half with respect to thepivot. 49. In a core booking machine,complementary halves of a core box relatively hinged together' at oneside of each, means for supporting said halves in substantiallyhorizontal open position, and fluid operated means for moving one ofsaid halves about said hinge andgaway from said support to book thehalves together, said means moving said half past its vertical deadcenter with respect to said hinge. V

Signed by me at ,Westfield, Massachusetts, this thirteenth day ofJanuary 1927.

: CLAR YCE Ix. PRINCE.

